Influences of Stacking Architectures of TiO2 Nanoparticle Layers on Characteristics of Dye-Sensitized Solar Cells
Journal
Journal of Nanomaterials
Journal Volume
2013
Pages
915461
Date Issued
2013
Author(s)
Chih-Hung Tsai
Yu-Tang Tsai
Tsung-Wei Huang
Sui-Ying Hsu
Yen-Fang Chen
Yuan Hsuan Jhang
Lun Hsieh
Chung-Chih Wu
Yen-Shan Chen
Abstract
We investigated the influences of stacking architectures of the TiO 2 nanoparticle layers on characteristics and performances of DSSCs. TiO 2 nanoparticles of different sizes and compositions were characterized for their morphological and optical/scattering properties in thin films. They were used to construct different stacking architectures of the TiO 2 nanoparticle layers for use as working electrodes of DSSCs. Characteristics and performances of DSSCs were examined to establish correlation of the stacking architectures of TiO 2 nanoparticle layers with characteristics of DSSCs. The results suggest that the three‐layer DSSC architecture, with sandwiching a 20 nm TiO 2 nanoparticle layer between a 37 nm TiO 2 nanoparticle layer and a hundred nm sized TiO 2 back scattering/reflection layer, is effective in enhancing DSSC efficiencies. The high‐total‐transmittance 37 nm TiO 2 nanoparticle layer with a larger haze can serve as an effective front scattering layer to scatter a portion of the incident light into larger oblique angles and therefore increase optical paths and absorption.
SDGs
Type
journal article